Ratti to Carat Converter: Gemstone Weight in Ratti, Carat and Gram
Free tool · Updated October 2, 2026 · By CouponTalk
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Quick answer
Gemstones in India are often sold by ratti, but there are two ratti standards. Most gem dealers use a "pakki" or jeweller's ratti of 0.91 carat (0.182 g); the traditional ratti is 0.1215 g (about 0.61 carat). So a 5-ratti stone is about 4.55 carats by the first standard but only about 3 carats by the second. Always ask which ratti the seller uses.
How to use this calculator
- Enter the weight and its unit.
- Pick the ratti standard your seller uses.
- Add a price per ratti or per carat to convert it.
Reference table
| Ratti | Carat (0.91 ratti) | Carat (traditional) | Gram (both) |
|---|---|---|---|
| 1 ratti | 0.91 ct | 0.61 ct | 0.182 g / 0.122 g |
| 3 ratti | 2.73 ct | 1.82 ct | 0.546 g / 0.365 g |
| 5 ratti | 4.55 ct | 3.04 ct | 0.91 g / 0.608 g |
| 7 ratti | 6.37 ct | 4.25 ct | 1.274 g / 0.851 g |
| 9 ratti | 8.19 ct | 5.47 ct | 1.638 g / 1.094 g |
| 11 ratti | 10.01 ct | 6.68 ct | 2.002 g / 1.337 g |
Gem trade practice varies. Confirm the standard and get a certificate for costly stones.
Frequently asked questions
How many carats is 1 ratti?
About 0.91 carat by the jeweller's standard used by most gem sellers, or about 0.61 carat by the traditional 0.1215 g ratti.
Is sawa ratti different?
Sawa means one and a quarter: "sawa paanch ratti" is 5.25 ratti. It is a weight, not a different standard.
Should I buy gemstones by ratti or carat?
Carat is the international standard and is printed on lab reports. Ask for the carat weight and a lab certificate.
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